1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cb1f3c9ef850448341e8d06cf95c4bcab8e52730bccff7d606bf780d2f8419. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f64e6c8-c9a8-4685-bc2e-f40d077ec4ab.json and https://artists.proofprofile.net/proofs/artist/8f64e6c8-c9a8-4685-bc2e-f40d077ec4ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ccaf67a95097e2f028417b1542444a84a58b44b725c0a12bc64188ab2e9336. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254164c8c485e8020bf680c365b326f096a81016c07f4634dddf6715aa9ce19e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb852474640f1d17ff0b12154ceb63fc378c8b711255a2060c04b6b4ad3f5c17e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2782bc43bfd8749ac300c1e9bdb13894eef528ec094b39d5a807053b31eae2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6cc3874cb95c06ab59564292f228eb5e6c532861ebaa3b640e36b0bc42b714. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3cfe7e741693377db4f67dbe7540c7d9a62e361cf8756c3cfb3c914c798e95. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500206.
Someone to Light up My Fire/This Happy Madness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f3b305e7e17bbc078e2f3dd701c7d5989daabf2cb2881aad53630de3d59b5c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec15e9a68a8b133ebd004d894aebf062b0ff10c847303c4279fa75ab180cd7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256c1d8f35528a72692dcd66443763d68d70f7040f83cae6c1802dd1b35debdc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1afc50c8e0369ad2ec4fbdf380110be6ae9ac538f37a4850d0cc59da56b195. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21e5052e354dd05ed3ce2d4ff82fd7efcd98f15627ca9b4691dd4564f65f576. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA1500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3bb4c7d654c0bd607a44c3c3e91f0209a67e29df77a92db035ab8bcaed4405. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA2201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71a7f7a4ec802f650122e121d8f7b9b065533b207214cfe2cf613d62788ae9a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA2201202.
What are You Doing The Rest of Your Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc511d714e5a094de96ecf9f7f997760ca92e01c1d550a62289bdeda96e017892. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA2201203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e0d5fd5294cf4e8187ea65ad8260da13cca635fe1f7840a917d3428be66c2f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA2201204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc1c104b7e5e575b1e9c2554d68a998f26a85fa0915d61bbce6c6f1e77bbfe7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA2304301.